{
  "manageEntity": {
    "action": "Save",
    "entityId": "2035286517",
    "entityType": "Track",
    "nonce": "0xf8af6b3e5c8dd384ef5438ab678bf58ecea16a5c0b96b59f44992e6079f4ae55",
    "signature": "0x916c0816ef7bcdeffa5c3507bfdcfa10f3b3872ffc6b66d16522355339b53b3e4fab2ad4db9ff294ab87fa7fa00dd380054842a46a64b57025ae4212d8b07bfd1b",
    "signer": "0x05D4434893815F914255C028DF9Da0a3e11FE0E8",
    "userId": "181835656"
  }
}